Mutations and phenotypes.

Column one lists the name of each mutation created for this work. Column two indicates the regions deleted in each line based on the coordinates of the Drosophila genome project (Release 5). Columns three and four summarize the transformations observed in the cuticle and embryonic CNS of A5/PS10 (labeled A5) and A6/PS11 (labeled A6). (†) indicates that in the Fab-64+IAB5 mutation, the sequence indicated was deleted, but was replaced by the sequence of the IAB5 initiator. (*) has been used to indicate that the cuticle trichome pattern occasionally shows signs of weak transformation towards A6. Based on other observations, we believe this could be a cis-over expression effect [29], [57] due to the loss of PRE sequences. (**) Mutations iab-6Δ5 and iab-6Δ6 display a slight loss of A6 cuticle at 18°C. Finally column five indicates the oligos listed in Table 2 that were used to generate the corresponding deficiencies.